Trajectory of 5 under map x->x + (x-with-digits-reversed).

Terms

a(0) =5a(1) =10a(2) =11a(3) =22a(4) =44a(5) =88a(6) =176a(7) =847a(8) =1595a(9) =7546a(10) =14003a(11) =44044a(12) =88088a(13) =176176a(14) =847847a(15) =1596595a(16) =7553546a(17) =14007103a(18) =44177144a(19) =88354288a(20) =176599676a(21) =853595347a(22) =1597190705a(23) =6668108656a(24) =13236127322a(25) =35608290553